DE102018100569B4 - Tile cutter with rip fence - Google Patents

Abstract

Tile cutter comprising a support surface (1) for tiles, a cutting group (2) and a stop device (3), the cutting group (2) defining a cutting direction (SR) and a cutting line (SL), the stop device (3) having two end strips (6, 7) and a stop element (4) with a stop surface (5), the cutting direction (SR) being alignable parallel to the stop surface (5), the stop surface (5) being designed to come into direct contact with a tile (8) to define a cutting distance (SA) between the abutment surface (5) and the cutting line (SL), the cutting distance (SA) being adjustable, the support surface (1) having two longitudinal sides and two front sides, the length of the cutting line (SL) extending between the end faces, with each of the two end faces being assigned one of the two end strips (6, 7),wherein the stop element (4) has a first and a second end, the first end of the stop element (4) being mounted on a first end strip (6) of the two end strips (6, 7) so that it can be moved in an adjustment direction (ER) transversely to the cutting direction (SR) in order to set the cutting distance (SA). whereby the second end of the stop element (4) is mounted on a second end strip (7) of the two end strips (6, 7) so that it can be moved in the adjustment direction (ER), characterized in that the stop device (3) has a drive (9) for Adjusting the cutting distance (SA), the drive (9) comprising two drive elements (10), one of the drive elements (10) being arranged on each of the two end strips (6, 7), the stop element (4) having a shaft (12 ), wherein the end strips (6, 7) each have a traversing groove (15) with a longitudinal extension in the adjustment direction (ER) and wherein the shaft (12) is traversably mounted in the traversing grooves (15).

Description

The invention relates to a tile cutter according to the preamble of claim 1.

Tile cutters with rip fence are known from practice and literature. In DE 600 02 155 T2 discloses a tile cutter having a support surface and a stop device. The stop device defines a stop surface which is oriented parallel to the cutting direction of the cutting assembly. The stop device enables an adjustable cutting distance to the cutting line of the cutting group via front strips. The stop device has correspondingly shaped sockets at both ends for engagement with the respective head rail.

JP S55-26664 U teaches a cutting device that includes a support surface, a stop device, and a cutting assembly. The cutting distance between the stop surface, the stop device and the cutting line is adjustable. The bearing surface comprises two longitudinal sides and two end faces, with each of the two longitudinal sides being assigned a longitudinal strip. The longitudinal bars are in the form of toothed racks which mesh with gear wheels. The gears are driven by a crank and a shaft.

DE 10 2011 050 520 A1 describes such a tile cutter for cutting long tiles, with a stop device having a stop element in the form of a stop bar. The stop bar is aligned parallel to a cutting line defined by a cutting group. A support surface is elongate in order in particular to be able to place long tiles. The cutting line extends between end faces of the elongate support surface, with end strips being arranged on the end faces. The length of the stop bar corresponds approximately to half the length of the support surface, with one of the two ends of the stop bar being slidably attached to one of the two end bars. The disadvantage of this known tile cutter is that the rip fence is imprecise, because when laying a very long tile, a slight pressure on the tile is sufficient, so that the rip fence gives way slightly, so that the stop surface and the cutting line are no longer aligned exactly parallel to one another . It can happen that the lengths of the front sides of the cut tile differ by more than half a millimeter and sometimes by a few millimeters, which can significantly impair the aesthetics of a tiled surface with small joint widths.

A tile cutter is known from practice, in which the rip fence is fastened to both end rails by means of quick-release clamps. Scales arranged on the end rails enable precise alignment of the rip fence so that the rip fence is aligned parallel to the cutting line to a large extent and secondly the cutting distance is precise. However, the handling of this tile cutter is very impractical, because for each new cutting distance to be set, both quick releases must first be loosened in order to then position the stop bar as desired and finally tighten both quick releases again. Such tile cutters have therefore turned out to be uncomfortable in practice.

It is therefore the object of the present invention to specify a tile cutter which, in particular, can cut long tiles precisely and which at the same time enables the cutting distance to be set conveniently. In particular, it is an object to describe a tile cutter which allows for front lengths with very little difference - for example less than 0.5 mm - in the case of tiles. It is also a preferred task to improve the user-friendliness of the tile cutter in such a way that the setting of the cutting distance becomes more practical.

In order to solve the technical problem, the invention teaches a tile cutter, comprising a support surface for tiles, a cutting group and a stop device, the cutting group defining a cutting direction SR and a cutting line SL, the stop device having two end strips and a stop element with a stop surface, the Cutting direction SR can be aligned parallel to the abutment surface and is preferably aligned, the abutment surface being designed to come into direct contact with a tile in order to define a cutting distance SA between the abutment surface and the cutting line SL, the cutting distance SA being adjustable, wherein the bearing surface has two longitudinal sides and two end faces, with the length of the cutting line SL extending between the end faces, with each of the two end faces being assigned one of the two end strips - preferably on the upper side of the bearing surface - , wherein the stop element comprises a first and a second end in the cutting direction SR, the first end of the stop element for setting the cutting distance SA being movably mounted on a first end strip of the two end strips in a setting direction ER transverse to the cutting direction, the second end of the stop element is movably mounted in the setting direction ER on a second end strip of the two end strips
characterized in that
the stop device has a drive for setting the cutting distance SA, the drive comprising two drive elements, one of the drive elements being arranged on each of the two end faces, the stop element having a shaft, the end strips each having a travel groove with a longitudinal extent in the setting direction ER , whereby the shaft is movably mounted in the traversing grooves.

The adjustment direction is preferably transverse and particularly preferably perpendicular to the cutting direction SR. The adjustment direction ER and/or the cutting direction SR is/are preferably aligned parallel to the bearing surface.

The term "drive" means in particular a manual or electrical generation of force, with the generation of force preferably being carried out manually. The term “drive element” means in particular active and/or passive elements of the power transmission, with active elements of the power transmission being electric motors, for example. Passive elements of the power transmission can be, for example, gears, racks, worms, chains, sprockets, screws or the like.

The invention is initially based on the knowledge that a precise parallel stop is required in particular for the desired small differences in end face lengths of less than 0.5 mm. It was found that for this purpose the stop element must be mounted on both sides. Furthermore, the invention is based on the finding that fixing the stop element on both sides independently of one another is cumbersome, so that a drive is required in order to set the cutting distance SA. In addition, the invention is based on the finding that a drive or drive element on only one end face due to the required length of the tiles or the stop element leads to the opposite end of the stop element running behind, so that the parallelism of the stop element suffers. Finally, it was found that the parallelism is ensured if at least one drive element is arranged on each end strip.

It is particularly preferred if the drive has a drive source, with the drive source being designed to generate a rotational movement on and/or in the stop element, with the drive elements being able to convert the rotational movement into a translatory movement of the stop element in the adjustment direction ER. The drive source can be, for example, an electric motor or a manually operable rotating element such as a wheel or a crank. The drive source is preferably associated with one of the two end rails and more preferably with the first end rail. It is advantageous that the drive source is connected to the stop element or the drive elements or the changeable pieces via a/the shaft.

It is preferred that the shaft has two changeable pieces, the changeable pieces interacting with the drive element in such a way that a/the translational movement for setting the cutting distance SA is produced from the rotary movement of the shaft. A first changeable piece is expediently assigned to the first end strip or to the drive element of the first end strip. It is possible for a second changeable piece of the two changeable pieces to be assigned to the second end strip or to the drive element of the second end strip. The conversion pieces are particularly preferably gears. It is advantageous if the drive elements are toothed racks which mesh with the gear wheels.

It is very preferred if the stop element comprises a profile. The shaft is preferably surrounded at least partially and preferably completely circumferentially by the profile at least at a distance. The profile is advantageously designed as a tube and particularly advantageously as a square tube. The profile is preferably arranged between the end rails. The stop element expediently comprises a stop bar, the stop bar preferably being fastened to the profile. The stop surface is expediently part of the stop bar. The stop bar is preferably angled in its cross section and preferably extends along the profile.

It is very advantageous that the stop element has at least one pivot bearing. The at least one pivot bearing is preferably designed as a ball bearing. It is preferred if the at least one rotary bearing mounts the shaft in the profile so that it can rotate. It is preferred that the pivot bearing is attached to the profile. A pivot bearing is expediently arranged on at least one and preferably on both ends of the profile. Preferably, at least one further and preferably two further rotary bearings are arranged in the profile. The pivot bearing or bearings are designed in such a way that the shaft is rotatably mounted in the profile.

It is preferred if the traversing grooves extend over at least a fifth, a quarter, a third, or half the length of the end strips. Expediently, the width or the widths of the travel grooves is greater than or equal to the diameter of the shaft at the level of the first or the second brow bar. It is preferred if the depth of the travel groove of the first end strip in the cutting direction corresponds to a thickness of the end strip in the cutting direction, so that the shaft protrudes through the first end strip. A handle is expediently arranged on the end of the shaft protruding through the first end strip. The handle is expediently a/the drive source for setting the cutting distance.

According to a particularly preferred embodiment, the stop element comprises at least one stabilizing element and preferably at least two stabilizing elements, the at least one stabilizing element being movable in at least one of the two end rails and preferably in both end rails or in at least one of the traversing grooves or in both traversing grooves in the adjustment direction ER is stored. Each of the at least two stabilizing elements is expediently mounted in one of the two end strips or traversing grooves so that it can be moved in the adjustment direction ER. It is preferred that the stabilizing element or the stabilizing elements rest on a lower boundary of the traversing groove or traversing grooves. Expediently, an upper limit of the traversing groove or traversing grooves rests on the stabilizing element or elements. It is preferred that the stabilizing element or the stabilizing elements form a positive fit with the traversing groove or traversing grooves upwards and/or downwards. It is preferred that the stabilizing element or the stabilizing elements has or have one roller each, the roller or rollers being/are movably mounted in the end strip or end strips or in the traversing groove or grooves . It is particularly preferred that the roller or rollers roll during a movement of the stop element in the adjustment direction due to contact with the end strip or the movement groove or with the end strips or with the movement grooves.

It is preferred if the drive elements each extend along at least a fifth, a quarter, a third, or a half of the length of the end rails in the adjustment direction. According to a very preferred embodiment, the conversion pieces or the gears are arranged below the drive elements or the toothed racks.

It is possible for the end rails to be reversibly attached to the support surface, preferably in a reversibly locking manner. The front rails can be fastened to the support surface directly or indirectly. According to a very preferred embodiment, a longitudinal ledge connects the two end ledges to one another, the stop element preferably being arranged between the longitudinal ledge and the cutting group. It is preferred that the end rails and the longitudinal rail form a frame. The longitudinal strip is preferably connected to the two end strips via joints.

According to a preferred embodiment, at least one of the front rails and preferably the first front rail has a sliding head that can be displaced in the adjustment direction ER, the sliding head being connected to the movable stop element. The sliding head can be a pointer which is arranged on a scale on an upper side of the at least one fascia. The sliding head preferably has a digital display, with the digital display showing the cutting distance. It is particularly preferred if the at least one end strip or the first end strip has a scale on its upper side, on which scale the sliding head is arranged so that it can be pushed.

The invention preferably relates to a tile cutter comprising a support surface for tiles and a cutting group, the cutting group defining a cutting direction SR and a cutting line SL, the cutting group having a base, a guide rail, a carriage that can be moved on the guide rail, and a head.

Such a tile cutter is known from the literature. DE 10 2011 050 520 A1 describes a tile cutter in which the carriage has an upper and a lower roller with a running direction in the cutting direction. The upper roller is in contact with an upper side of the guide rail, whereas the lower roller is in contact with an underside of the guide rail. The rollers have a concave profile and are thus designed to complement the convex profile of the top and bottom of the guide rail. The rollers and the guide rail are made of hardened steel. A main body of the carriage is arranged on the side of the rollers, on which in turn a handle for operating the carriage is attached.

The disadvantage, however, is that the rollers are exposed to not inconsiderable amounts of tile dust, so that over time the tile dust penetrates into the pivot bearings of the rollers and between the rollers and the guide rail. As a result, the rollers become stiffer and are subject to wear despite the hardened steel. This wear causes increasing play between the rollers and the guide roller, so that the cutting accuracy suffers.

It is therefore a preferred technical object of the invention to specify a tile cutter which has greater cutting accuracy over the long term, in particular greater accuracy of the cutting line or a correspondingly precise cutting group.

To solve the preferred technical problem, the invention teaches a tile cutter, comprising a support surface for tiles and a cutting group, the cutting group defining a cutting direction SR and a cutting line SL, the cutting group having a foot, a guide rail, a carriage that can be moved on the guide rail and a Having a head, the foot and the head determining an orientation of the guide rail and thus the cutting direction SR and the cutting line SL,
wherein the carriage has a main body, wherein the main body is slidably mounted on the guide rail via at least one linear roller bearing with rolling elements.

This is based on the finding that linear roller bearings are enclosed between the main body and the guide rail, so that the linear roller bearings do not come into contact with airborne tile dust. As a result, the linear roller bearings are exposed to significantly higher wear, which is why the clearance between the carriage and the guide rail remains permanently small. Furthermore, it was found that a linear roller bearing—that is, a roller bearing that extends in the cutting direction and is movable in the cutting direction—guarantees a large number of contact points with the guide rail. Compared to a roller with only one point of contact on the guide rail, greater tilting stability is achieved as a result. As a result, this fact also contributes to greater cutting accuracy and thus to the solution of the preferred technical task.

The support surface expediently comprises two longitudinal sides and two end faces, with the length of the cutting line SL extending between the end faces. The tile cutter preferably comprises a stop device, the stop device preferably having a stop element with a stop surface. The stop surface is expediently designed to come into direct contact with a tile.

According to a preferred embodiment, the at least one linear roller bearing is designed in such a way that the roller bodies are kept at a constant and preferably uniform distance from one another. The rolling bodies are preferably balls. The rolling bodies in the at least one linear roller bearing expediently form a rolling body chain or a ball chain. It is preferred that the at least one linear roller bearing comprises a rolling element cage, which preferably comprises plastic. The rolling element cage preferably has spacers between the rolling bodies, the spacers preferably being connected to one another via two strips which bear against the outside of the rolling bodies and are expediently opposite one another and preferably run in the direction of the linear roller bearing. According to one embodiment, the two strips and a large number of the intermediate pieces form a large number of compartments, with a rolling element being expediently arranged in each compartment. The rolling bodies are preferably made of steel.

According to a very particularly preferred embodiment, the main body encloses the linear roller bearing or bearings, with the main body at least partially and preferably only partially enclosing the guide rail in cross section. It is preferable that the main body is open at the top. The carriage expediently comprises an attachment, the attachment being arranged on an upper side of the carriage. It is preferred that a handle is arranged on the attachment, preferably via an extension.

It is very advantageous if the guide rail--in cross-section--has concave side walls. The inner sides of the main body of the carriage are preferably designed to be complementary to the concave side walls of the guide rail, at least in sections. It is expedient for an upper side and an underside of the guide rail to be flat. It is possible that bores - especially countersunk bores - penetrate the guide rail from bottom to top. It is very preferred if each of the two side walls has at least one and preferably two track grooves for linear roller bearings.

According to a very preferred embodiment, the at least one linear roller bearing or linear roller bearings extends lengthwise in the cutting direction SR. The linear roller bearing is/are preferably designed to be circumferential. It is preferable if the at least one linear roller bearing has a feed between the main body and the guide rail and a return in the main body. According to a very preferred embodiment, the rolling elements follow one another in the cutting direction SR in the forward run of the linear roller bearing. It is preferred if at least one linear roller bearing and preferably two linear roller bearings are arranged on the two side walls of the guide rail. Appropriately, the centers of the rolling elements of the at least one linear roller bearing are in one camp level arranged. The bearing plane of the at least one linear roller bearing is preferably arranged at an angle to the support surface and in particular parallel to the cutting line SL. It is possible for a second linear roller bearing to have a bearing plane which is arranged parallel to the bearing surface.

It is preferable that the carriage has a seal at each end of the main body. The term "front side" means in particular a side which faces the foot or the head of the cutting group. The seal suitably comprises a sealing material which is softer than steel. The sealing material encloses the guide rail preferably at least partially circumferentially and expediently only partially circumferentially. It is preferred if the sealing material touches the guide rail. The sealing material is preferably absorbent and more preferably impregnated with a lubricant.

It is expedient for the carriage to have a cutting element, for example a cutting roller. The cutting element is preferably arranged directly below the guide rail and particularly preferably centrally below a longitudinal axis of the guide rail. It is expedient if the cutting element is arranged at a lower end of a cutting shank, which cutting shank is preferably connected to the main body of the carriage.

According to a preferred embodiment, the end of the guide rail associated with the head comprises a spacer for the purpose of defining a distance between the guide rail and the support surface. The spacer preferably comprises two mutually parallel side surfaces, the side surfaces preferably facing the longitudinal sides of the support surface. It is very preferred if the spacer has two arms, the two arms following one another as seen in the cutting direction and defining a groove between them.

It is particularly preferred if the head has a fixing mount for fixing the end of the guide rail assigned to the head, the fixing mount comprising at least two, four or eight rollers. It is preferred if the rollers are opposite each other in pairs with respect to the guide rail or the spacer of the guide rail. The at least two/four/eight rollers preferably form one/two/four pairs of rollers. It is particularly advantageous if the pair of rollers or pairs of rollers exert a form fit on both sides and more preferably a clamping force on both sides of the spacer. The roller axes are expediently configured parallel to the cutting direction SR. It is preferred that the fixing receptacle is arranged above the support surface and preferably completely above the support surface. Preferably the fixation receptacle has at least one leg and preferably two legs. The guide rail can expediently be fixed between the legs in the plan view or the spacer of the guide rail can be fixed. It is preferred if the legs are connected to one another via at least one connecting part. The at least one connecting part is a screw connection, for example. It is very preferred if the at least one connecting part exerts an adjustable pressure on the two legs, so that the two legs are in mechanical tension with respect to one another in the direction of adjustment. It is very preferred that the at least one connecting part is designed in such a way that it defines the clamping force of the pair of rollers or pairs of rollers on the spacer. It is preferred that each leg has at least one, preferably two and more preferably four rollers, more preferably each leg having two first rollers at a first level and two further rollers at a second level.

It is expedient for the foot to have at least one pivot axis for lifting the end of the guide rail associated with the head. The base preferably includes a pivot axis for pivoting the guide rail in the horizontal direction. It is preferred that the guide rail has a handle for pivoting the guide rail at an end assigned to the head. It is advantageous if a crushing jaw is arranged on the guide rail or on an end of the guide rail assigned to the foot. A crushing lug opposite the crushing jaw is expediently fastened to the support surface. It is expedient for the crushing jaw to taper towards the middle on its underside.

• 1 eine Draufsicht eines erfindungsgemäßen Fliesenschneiders mit einer erfindungsgemäßen Anschlagvorrichtung und einer bevorzugten Schneidgruppe,
• 2 eine Seitenansicht des Fliesenschneiders aus 1 mit Blick auf die Schneidgruppe,
• 3 eine perspektivische Ansicht mit Blick auf eine Innenseite einer Stirnleiste der Anschlagvorrichtungen aus den 1 und 2 sowie einen Ausschnitt einer Seitenansicht der Stirnleiste mit Blick auf deren Außenseite,
• 4 eine Querschnittsansicht der Schneidgruppe aus den 1 und 2 und
• 5 eine Seitenansicht eines Kopfes der Schneidgruppe der 1, 2 und 4.

The invention is explained in more detail below with reference to a drawing showing an exemplary embodiment. They show in a schematic representation:

• 1 a top view of a tile cutter according to the invention with a stop device according to the invention and a preferred cutting group,
• 2 a side view of the tile cutter 1 looking at the cutting group,
• 3 a perspective view looking at an inside of a front bar of the stop devices from the 1 and 2 as well as a section of a side view of the front strip with a view of its outside,
• 4 a cross-sectional view of the cutting assembly of FIGS 1 and 2 and
• 5 a side view of a head of the cutting group of FIG 1 , 2 and 4 .

A tile cutter according to the invention is in 1 shown and comprises a support surface 1 for supporting tiles 8, a cutting group 2 and a stop device 3. The stop device 3 comprises a stop element 4 with a stop surface 5, the stop surface 5 being designed to come into direct contact with the tile 8 . In addition, the stop device 3 includes a first end strip 6 and a second end strip 7, which are connected to one another via a longitudinal strip 33 and form a frame. The frame or the front rails 6, 7 are connected to the support surface 1 in a detachable locking manner.

The cutting group 2 comprises a foot 18, a guide rail 19, a carriage 20 arranged to be movable on the guide rail 19 and a head 21. On the underside of the carriage 20 is an in 1 non-visible cutting element 30 arranged (cf. 2 and 4 ), which is designed as a cutting roller in this embodiment. The cutting element 30 is designed to score the tile 8 in order to later break it along the score line.

The foot 18 and head 21 determine the alignment of the guide rail 19 and thus also a travel path of the cutting element 30 and thus a cutting line SL. The cutting line SL in turn defines a cutting direction SR.

In 1 can also be seen that the stop surface 5 is aligned parallel to the cutting line SL. The rip fence enables a particularly precise cut, which is particularly useful with very long tiles, where the short sides should have a length deviation of less than 0.5 mm if possible. For this reason, the cutting line SL of this exemplary embodiment has a length of more than one meter, the length of the cutting line SL extending between two end faces of the support surface 1 and being arranged in particular between the foot 18 and the head 21 . The long sides of the bearing surface 1 are longer than the cutting line SL itself, since the foot 18 and head 21 still have to find space on the bearing surface 1 . A support mat 34 made of a soft plastic is arranged on the support surface 1 approximately along the length of the cutting line SL, which mat 34 prevents the tile 8 from slipping and prevents any mechanical stress peaks acting on the tile 8 . In addition, the deck 1 has hinges 32 so that after removal of the foot 18 and head 21, the deck 1 can be folded for ease of transport.

In the 1 and 2 is shown that the foot 18 has a pivot axis 28 which is aligned horizontally to the support surface 1 and parallel to the end face of the support surface 1 and which enables the opposite end of the guide rail 19 to be raised and lowered with a handle 36 (see Fig. 1 ). Likewise, the foot 18 comprises a pivot axis 35 which runs perpendicularly through the foot 18 and which--as in FIG 1 indicated by dashed lines - allows pivoting of the guide rail 19 in a horizontal plane. The head 21 has according to 1 in addition to a fixing receptacle 25 for fixing the guide rail 19, it also has two shelves 27 at its upper end, so that if necessary the guide rail 19 can be pulled out of the fixing receptacle 25 and placed on one of the two shelves 27. In this embodiment, both shelves 27 have a rubberized floor. The carriage 20 shows the 1 and 2 at its upper end a handle 37 which is attached to a main body 22 of the carriage 20 via an extension. The extension of the handle 37 engages the main body 22 of the carriage 20 in the center above a longitudinal axis of the guide rail 19 or the cutting line SL.

The stop device 3 comprises according to 1 and 2 a drive 9 with which the stop element 4 can be moved within the stop device 3 or the frame in a setting direction ER, so that a cutting distance SA between the cutting line SL and the stop surface 5 can be set. For this purpose, the drive 9 has a drive source 11 in the form of a rotatable handle. The rotational movement generated by the drive source 11 is passed on via a shaft 12, which shaft 12 extends from the drive source 11 to the second end strip 7, so that the shaft 12 runs through the stop element 4 for the most part. Both end strips 6, 7 each have on their inner side a drive element 10 in the form of a toothed rack with teeth pointing downwards. Correspondingly, the shaft 12 is provided with two conversion pieces 39 in the form of two gear wheels (cf. 3 ) provided, which mesh with the drive elements 10 and racks. Consequently, via the drive elements 10 in connection with the conversion pieces 39, the rotational movement of the drive source is converted into a translatory movement, which runs in the setting direction ER for the purpose of setting the cutting distance SA. The arrangement of the drive elements 10 on both end faces 6, 7 ensures that the force applied to the drive source is converted into the translatory movement not only on the first end strip 6, but also on the second end strip 7, so that in particular the end of the stop element 4 assigned to the second end strip 7 does not come into contact with the end of the stop element 4 assigned to the first end strip 6 Stop element 4 runs behind.

The stop element 4 comprises a profile 13 designed as a square tube, through which the shaft 12 runs. In this exemplary embodiment, a pivot bearing 14, for example in the form of a ball bearing, is arranged at both ends of the profile 13, so that the shaft is supported. In addition, there are two further pivot bearings, not shown here, for supporting the shaft 12 within the profile 13 . The surface of the protruding leg of the L that faces the cutting group 2 serves as a stop surface.

In this embodiment, the first end strip 6 is provided with a scale 38 on its upper side for easy reading of the cutting distance SA. For this purpose, the stop element 4 has a stabilizing element 16 which includes a pointer pointing to the scale 38 . In this exemplary embodiment, the pointer is connected to a sliding head 17, the sliding head 17 having a digital display. With the help of the digital display, reference positions can be set again and again, so that differential distances can also be recorded very easily. Furthermore, a digital display offers an even more convenient way of reading than the scale 38. In this exemplary embodiment, the scale 38 and the digital display or the sliding head 17 are components of a digital caliper.

The foot 18 associated end of the guide rail 19 has according to 2 furthermore, a crushing jaw 31 on its underside, the crushing jaw 31 having an indentation tapering in the direction of the cutting line on its underside. This indentation corresponds to an in 2 not recognizable underlying crushing nose made of steel, which is arranged stationary on the support surface 1. After a tile 8 has been provided with a score line, the tile 8 is positioned on the breaking nose so that the score line is located immediately above the breaking nose and below the breaking jaw. Then, by means of the handle 36 of the guide rail 19, the guide rail 19 with the breaking jaw 31 is pressed down until the tile 8 breaks along the score line.

When lifting the guide rail 19 and lifting it out of the fixing mount 25, in 1 It can be seen that the guide rail 19 has a spacer 29 at the level of the fixing mount 25 . The spacer 29 comprises two arms which form a groove between them, the function of which will be explained later with a view to FIG 5 explained. The spacer 29 serves to define a distance between the guide rail and the support surface 1 . So that the cutting line SL is exactly parallel to the support surface 1 (cf. 2 ), the foot 18 has a height adjustment option for the guide rail 19 in the form of a screw thread, with a spring pressing from below against the guide rail 19 in the direction of the screw thread. The cutting element 30 of the carriage 20, on the other hand, is connected to the main body 22 of the carriage via a length-adjustable shaft. This possibility of adjusting the height of the cutting element 30 makes it possible to adapt the cutting element 30 or the cutting line SL with regard to different thicknesses of the tiles and different support mats 34 .

In 3 a perspective view is shown so that the view of the inside of the brow bar 6 is clear. First, it can be seen that the conversion piece 39 of this exemplary embodiment is a gear wheel which meshes with the drive element 10 in the form of a toothed rack. The teeth of the rack of this embodiment are directed downwards in order to expose the teeth of the conversion piece 39 and the drive element 10 to the lowest possible weight load. The stop element 4 is carried by the shaft 12 or the rotary bearings 14, the shaft 12 running through a respective traversing groove 15 of the front strips 6, 7. The shaft 12 thus fulfills not only the function of transmitting the rotational movement, but also a carrying function. The stabilizing element 16 is fastened to the stop element 4 or to the square tube profile 13 and runs towards the end strip 6 in the shape of a fork. The upper tine of the fork of the stabilizing element 16 is the pointer already mentioned, which is connected to the sliding head 17 . The lower tine ends in a stabilizing roller 42, which is also arranged in the traversing groove 15, so that rotation of the square tube profile 13 is prevented. The stabilizing roller 42 of the stabilizing element 16 also assumes a carrying function of the stop element 4. The recess between the two prongs of the stabilizing element 16 essentially serves to accommodate the cross section of the drive element 10.

In 4 the guide rail 19 and the carriage 20 are shown in cross section, with the main body 22 of the carriage 20 being shown partially in section. First of all it has to be recognized NEN that the side walls of the guide rail 19 are formed concave several times, whereby the ability of the carriage 20 to run on the guide rail 19 is ensured. The carriage 20 has two linear roller bearings 23 on both sides of the guide rail 19 , each of the linear roller bearings 23 being provided with rolling elements 24 . The rolling elements 24 of this exemplary embodiment are spherical and run in corresponding track grooves on the side walls of the guide rail 19. The spherical rolling elements 24 of this exemplary embodiment, together with rolling element cages, form a total of four rolling element chains 43. Each rolling element chain 43 runs in a track groove of the guide rail 19, with each rolling element chain 43 is guided circumferentially in the main body 22 . The circulation requires that the main body 20 for each rolling body chain 43 includes a feeder associated with the guide rail 19 and a return arranged in the main body 22 .

In 5 1 is a side view of the fixing receptacle 25 looking in the direction of the cutting direction, although the guide rail 19 and the spacer 29 are shown in section. It can be seen here that a leg 41 is arranged below each shelf 27 . Each leg 41 carries two pairs of rollers arranged one above the other and thus a total of four rollers 26.

Likewise, each leg 41 includes two screw heads of two connecting parts 40. The screws of the connecting parts 40 pass through the legs 41 and are fixed there by means of nuts, so that the two legs 41 are in tension with one another. When the guide rail 19 is lowered and received by the fixing seat 25, the groove of the spacer 29 receives the two screw threads, whereas the two arms of the spacer 29 come into contact with the rollers 26. The legs 41 are arranged in such a way and the connecting parts 40 are designed in such a way that the rollers 26 exert pressure on each of the two arms of the spacer 29 from both sides. In this way, firstly, particularly smooth running is achieved when the guide rail 19 is introduced into the fixing receptacle 25 and, at the same time, a particularly good definition of the position of the guide rail 19 is achieved for the purpose of precisely defining the cutting line SL.

Claims (8)

Tile cutter comprising a support surface (1) for tiles, a cutting group (2) and a stop device (3), the cutting group (2) defining a cutting direction (SR) and a cutting line (SL), the stop device (3) having two end strips (6, 7) and a stop element (4) with a stop surface (5), the cutting direction (SR) being alignable parallel to the stop surface (5), the stop surface (5) being designed to come into direct contact with a tile (8) to define a cutting distance (SA) between the abutment surface (5) and the cutting line (SL), the cutting distance (SA) being adjustable, the support surface (1) having two longitudinal sides and two front sides, the length of the cutting line (SL) extending between the end faces, with each of the two end faces being assigned one of the two end strips (6, 7), the stop element (4) having a first u nd comprises a second end, wherein the first end of the stop element (4) for setting the cutting distance (SA) can be moved in a setting direction (ER) transversely to the cutting direction (SR) on a first end strip (6) of the two end strips (6, 7) is mounted, the second end of the stop element (4) being mounted on a second end strip (7) of the two end strips (6, 7) so that it can be moved in the adjustment direction (ER), characterized in that the stop device (3) has a drive (9 ) for setting the cutting distance (SA), the drive (9) comprising two drive elements (10), one of the drive elements (10) being arranged on each of the two end strips (6, 7), the stop element (4) being a shaft (12), wherein the end strips (6, 7) each have a traversing groove (15) with a longitudinal extension in the adjustment direction (ER) and wherein the shaft (12) is traversably mounted in the traversing grooves (15). tile cutter claim 1 , wherein the drive (9) has a drive source (11), wherein the drive source (11) is designed to generate a rotary movement on and/or in the stop element (4), with the aid of the drive elements (10) causing the rotary movement of the drive source ( 11) can be converted into a translational movement of the stop element (4) in the adjustment direction (ER). Tile cutter according to one of the Claims 1 or 2 , wherein the stop element (4) comprises a profile (13). Tile cutter according to one of the Claims 1 until 3 , wherein the stop element (4) has at least one pivot bearing (14). Tile cutter according to one of the Claims 1 until 4 , wherein the stop element (4) comprises at least one stabilizing element (16), wherein the stabilizing element (16) in at least one of the two end strips (6, 7) are mounted so that they can be moved in the adjustment direction (ER). Tile cutter according to one of the Claims 1 until 5 , wherein the drive elements (10) each extend at least along one fifth of the length of the end rails (6, 7). Tile cutter according to one of the Claims 1 until 6 , wherein the front strips (6, 7) are reversibly attached to the bearing surface (1). Tile cutter according to one of the Claims 1 until 7 , wherein at least one of the end rails (6, 7) has a sliding head (17) that can be displaced in the adjustment direction (ER), the sliding head (17) being connected to the stop element (4).

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